*{
    padding: 0;
    margin: 0;
}
.box {
    width: 100%;
    height: 43px;
    background-color: #313131;
}
.top-nav{
    width: 1296px;
    margin: 0 auto;
}
.top-logo img{
    width: 21px;
    height: 21px;
    margin-top: 10px;
    margin-left: 100px;
}
.top-main{
    display:inline-block;
}
li{
    display: inline-block;
}













